A study of various factors affecting digestion of fish tissue prior to mercury determination [0.03%]
汞测定前影响鱼组织消化的因素研究报告
M Sadiq,T H Zaidi
M Sadiq
The effect of temperature on digestion, the acid combination and their quantities, and the time required for digestion of fish tissue were investigated using Hamour (Epinephelus tauvina) body tissue. Concentrations of Hg in fish tissue dige...
The use of ion-exchange filters for the determination of iodide in milk by X-ray fluorescence spectrometry [0.03%]
用于牛奶中碘化物X射线荧光光谱测定的离子交换滤波器的应用研究
J F Lawrence,R K Chadha,H B Conacher
J F Lawrence
An X-ray fluorescence spectrometric method has been developed for the quantitative determination of iodide in milk which makes use of anion-exchange filters for the isolation and concentration of iodide from the liquid samples. The milk is ...
Purge and trap flame photometric gas chromatography technique for the speciation of trace organotin and organosulfur compounds in a human urine standard reference material (SRM) [0.03%]
人体尿标准参考物(NIST SRM 1649a)中痕量有机锡和硫化物的形态分析-气相色谱火焰光度检测法中的吹扫-捕集技术研究
G J Olson,F E Brinckman,J A Jackson
G J Olson
Ultratrace levels of organotin species and an organosulfur compound were detected in a National Bureau of Standards (NBS) human urine Standard Reference Material, SRM 2670, and a previously certified urine SRM 2672, using a purge and trap s...
Spectrophotometric determination of vanadium in complex materials using N-m-TMBHA and thiocyanate [0.03%]
N-MTMBHA和硫氰酸盐光度法测定复杂材料中的钒量
A K Baveja,V K Gupta
A K Baveja
Vanadium(V) reacts with N-m-Tolyl-p-methoxy benzohydroxamic acid to form 1:2 (metal to ligand) complex containing a basic V = O group and an acidic V-OH group, which forms addition compounds with thiocyanate to give a hyper and bathochromic...
Trace analysis of 2,4,5,TP and other acidic herbicides in wheat using multicolumn-HPLC [0.03%]
小麦中2,4,5-TMP等弱酸性除草剂的多柱HPLC法超痕量分析研究
H Ruckendorfer,W Lindner
H Ruckendorfer
In continuation of our work dealing with multicolumn HPLC (MC-HPLC) techniques and their applicabilities for tracing a few compounds out of complex multicomponent matrices a residue analysis of the herbicides 2,4,5T and MCPA (phenoxyacids) ...
R E Bland,C Harrison,L E Martin et al.
R E Bland et al.
An automated continuous flow liquid-liquid extraction procedure is described for the separation of the H2-antagonist loxtidine from plasma samples containing two metabolites which interfere in the radioimmunoassay of the drug. The extractio...
The use of various chromatographic techniques for the determination of phenylurea herbicides and their corresponding anilines in environmental samples. II. Applications [0.03%]
几种色谱法测定环境样品中苯脲除草剂及其对应的芳胺类化合物的应用研究(ii).应用研究
A de Kok,M van Opstal,T de Jong et al.
A de Kok et al.
In earlier work, various strategies have been developed for the trace-level determination of phenylurea herbicides and the anilines which are their main degradation products. They include catalytic hydrolysis of the phenylureas on silica, l...
An atomic absorption spectrophotometric method for the determination of trace amounts of zinc in canned juices after ion exchange separation [0.03%]
离子交换分离后原子吸收分光光度法测定罐藏果汁中痕量锌的方法研究
A M Aziz-Alrahman
A M Aziz-Alrahman
An atomic absorption spectrophotometric method is described for the determination of microgram quantities of zinc in canned juices. After sample digestion in concentrated nitric acid, the solution is evaporated till near dryness, and then a...
Determination of trace elements of Egyptian cane sugar (Naga Hammady factories) by neutron activation, atomic absorption spectrophotometric and inductively coupled plasma-atomic emission spectrometric analyses [0.03%]
用中子活化、原子吸收光谱法和电感耦合等离子体发射光谱法测定埃及甘蔗糖（Naga Hammady工厂）中的痕量元素
R M Awadallah,M K Sherif,A E Mohamed et al.
R M Awadallah et al.
INAA, AAS and ICP-AES techniques are applied to the determination of trace amounts of Ag, Al, As, Au, Ba, Br, Ca, Cd, Ce, Cl, Co, Cr, Cs, Cu, Dy, Eu, Fe, Ga, Hf, K, La, Li, Lu, Mg, Mn, Na, Nb, Ni, Pb, Sb, Sc, Se, Sm, Sn, Sr, Ta, Th, Ti, U, ...
Variations of phthalate ester concentrations in sediments from the Chester River, Maryland [0.03%]
马里兰州切斯特河沉积物中酞酸酯浓度的分布及其影响因素
J C Peterson,D H Freeman
J C Peterson
Phthalate esters discharged from a plasticizer-manufacturing plant were distinguished from those of other sources in the Chester River, Maryland by comparing the distinctive patterns of alkyl phthalate species of the plant to those of sedim...